Answer:
Power is calculated by multiplying voltage by current.
Explanation:
If you're calculating the power of an athlete who is lifting weights,
or the power of a windmill that is pumping water from a well, or
the power of two horses turning millstones, then those electrical
units won't help at all.
But if you happen to be calculating the power delivered to an
electrical circuit or dissipated by an electrical device, then you
can use ...
(voltage) times (current)
or
(voltage)² divided by (resistance)
or
(current)² times (resistance) .
The choice just depends on which quantities you know
or can easily measure.
What is force. in your own words
Answer:
force is a push or pull that exerted on a body
Answer:
force is that push or pull on a body that changes or tends to change the state of rest or of uniform motion in a straight line.
Explanation:
hope this helps
HELP ILL MAEK BRAINLIEST!!!
Match the following activities.
1. amount of force times the distance it moves an object
force of gravity
2. kind of force used to operate engines
steam
3.
English unit of measuring work equal to moving one pound
one foot
work
4.
metric measurement of work equal to moving one newton
one meter
muscular force
5. kind of force that pulls things toward the center of the earth
newton-
meter
6. force used when walking
force of wind
7. force used to turn a windmill
foot-pound
A car with a mass of 2000 kg accelerates at 6 m/s'at a green light. What is the car's force?
Answer:
Car's force is 12000 N.
Explanation:
→ Force = Mass × Acceleration
→ Force = 2000 kg × 6 m/s²
→ Force = 12000 NWhen the forces acting on a stationary object are unbalanced, the object will
A. remain stationary
B. begin moving and speed up
C. remain moving at a constant speed
D. No effect
Answer:
B
Explanation:
Well it is certainly not no effect. Something has to happen. Not D.
If the balances are unbalanced it means that there is a force left over that can cause an acceleration. The speed is not constant when there is an acceleration. Not C
Unbalanced forces mean that there has to be something happening. Unless the friction cannot be overcome, there will be motion. Not A. But it is your second best answer if there is friction.
The answer I think you are intended to give is B.
In the oxygen cycle, oxygen is
(Choose one):
1.) added to and removed from the atmosphere by photosynthesis.
2.) added to the atmosphere by cellular respiration and removed by photosynthesis.
3.) added to the atmosphere by decomposers and removed by photosynthesis.
4.) added to the atmosphere by photosynthesis and removed by cellular respiration and combustion.
Answer:
4.) added to the atmosphere by photosynthesis and removed by cellular respiration and combustion.
Explanation:
The atmospheric cycle is a biogeochemical cycle and is a transition between the oxidation state in ions, oxides, and molecules. The largest reservoir on the earth for oxygen island or lithosphere. The crust and mantle together make up 99.5% of oxygen by volume. The rest is found in the air that 21%, 22% in the biosphere, and 33% in the hydrosphere.Please tell the answer..
[tex] \huge \boxed{ \mathbf{Answer࿐}}[/tex]
The correct option is : C.
____________________________________________________________________________________
Displacement is the shortest distance covered by an object to reach the destination from the starting point . so it can be both positive and negative.
____________________________________________________________________________________
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when the net force of opposite forces is zero , the forces are
A. not even
B. unequal
C. unbalanced
D. balanced
Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is
Explanation:
you have to divide by 2 and times by 2
6. An excited dog runs full-speed toward his owner who has just returned home from
school. If he runs north along their driveway for a distance of 45 m and takes 5.2 s to get
there, what is his average velocity?
Please answer in comments with work !!:)
Answer:
v = 8.65 m/s
Explanation:
Given that,
Distance covered by the doge, d = 45 m
Time taken, t = 5.2 s
We need to find its average speed. The total distance covered divided by the total time taken is called the average speed of an object. So,
[tex]v=\dfrac{45\ m}{5.2\ s}\\\\=8.65\ m/s[/tex]
So, the average speed is 8.65 m/s.
A set of data is collected from a simple circuit with a
20 Ω resistor and is represented in the table.
The current at 5.0 V is
A.
The current at 15 V is
A.
Answer:
A. Recall Ohm's Law: V = IR
If V = 45 volts, and I = 5 amps, the R = V/I = 45V/5A = 9Ω
B. We know the potential difference and the resistance, both of which have good units. All we have to do is plug the known values into the equation and solve for the current:
I=15V9Ω
Thus, the electric current is: 1.67A
Answer:
.25
.75
Explanation:
edge
which drawing below represents the electric field surrounding two objects that have equal magnitude changes of opposite polarity?
Answer:
the 3rd one
Explanation:
j cause I think so
A disadvantage of a _____
telescope is that you need very large lenses.
A. refracting
B. reflecting
I feel dvmb for asking this question but... help? Please?
Force, it can speed up or slow down an object which can change the direction in which an object is moving.
A point charge at the origin of a coordinate system produces the electric field E=(56,000 N/C) x on the x-axis at the location x=-0.65m. Determine the sign and magnitude of the charge.
Answer:
q = 1.95 x 10⁻⁶ C = 1.95 μC
Explanation:
The formula for the electric field produced by a point charge is given as follows:
[tex]E = \frac{kq}{r^2}\\[/tex]
where,
E = Electric Field strength = 56000 N/C
k = Colomb's Constant = 9 x 10⁹ Nm²/C²
q = magnitude of charge = ?
r = distance = 0.65 m
Therefore,
[tex]56000\ N/C = \frac{(9\ x\ 10^9\ Nm^2/C^2)q}{(0.56\ m)^2}\\\\q = \frac{(56000\ N/C)(0.56\ m)^2}{9\ x\ 10^9\ Nm^/C^2}\\\\[/tex]
q = 1.95 x 10⁻⁶ C = 1.95 μC
Two like charges are either both ______ or both _______
Answer:
negative or posotive i think
Explanation:
A transformer has 100 turns on primary coil and 300 turn on secondary coil. If 20V Ac is applied to the primary coil, what would be the secondary voltage?
Answer:
the secondary voltage is 60 V.
Explanation:
Given;
number of turns on the primary coil, Np = 100 turns
number of turns on the secondary coil, Ns = 300 turns
voltage supply in the primary coil, Vp = 20 V
let the secondary voltage = Vs
Apply the following transformer equation to determine the secondary voltage;
[tex]\frac{V_s}{V_p} =\frac{N_s}{N_p} \\\\V_s = \frac{V_p \times N_s}{N_p}\\\\V_s = \frac{20 \times 300}{100} \\\\V_s = 60 \ V[/tex]
Therefore, the secondary voltage is 60 V.
18. A series circuit has an array of light bulbs connected. One burns out.
What will happen to the rest of
the bulbs?
*
Most will also burn out
Half will switch off and half will remain on
They will all remain on
They will all switch off
A certain circuit is composed of two series resistors. The total resistance is 10kΩ. One of the resistors is 2 kΩ. The other resistor value is
Answer:
8kΩ.
Explanation:
10kΩ. - 2kΩ. = 8kΩ.
Based on information from the graph above, what can be concluded about the relationship between the temperature of a solvent and the solubility of a solute?
A. No conclusions can be drawn.
B. For most solutes, as temperature increases, the solubility is unaffected.
C. For most solutes, as temperature increases, the solubility increases.
D. For most solutes, as temperature increases, the solubility decreases.
which types of change observe the law of conservation of mass? single answer
A. only changes of state
B. only physical changes
C. only chemical changes
D. physical changes and chemical changes
Answer:
d
Explanation:
d just because it is and it's talking about mass and physical match's up with mass
Measuring a liquid's volume indicated the capacity ______ of the holds it. The most common units for expressing liquid volumes are _____ and milliliters.
Answer:
Measuring, comparing and estimating liquid volumes are taught using metric units like liters and milliliters and customary units like quart, pints, gallons and more. Capacity is actually the amount of liquid in the container, which is also the volume of a liquid.
Explanation:
I shall give you the ruler.change to passive
Answer:
The ruler shall be given to you.
I tried but that's basically how it should look.
I WILL MARK YOU THE BRAINLIEST NO LINKS
The weight of the fluid that an object displaces is equal to the buoyant force acting on the object is
spring force
Archimedes Principle
buoyant force
Hooke's Law
Answer:
Archimedes' Principle
Explanation:
Its because Archimedes' Principle states "that the buoyant force on an object is equal to the weight of the fluid displaced by the object.... If you want to know the buoyant force on an object, you only need to determine the weight of the fluid displaced by the object."
what is the relationship between the voltage across the energy
source and the voltages across the lamps in parallel
Answer:
وؤتي يتنييوتينستصميوخصز ءتث. ثنصطث
HELP PLS ILL GIVE U BRAINLIST
Which of the following is NOT a term used to describe the conductivity of materials ?
A: Semi Insulator
B: Insulator
C: semiconductor
D: conductor
B. insulator
hope this was helpful
Answer:
B. Insulator
Explanation:
Cant conduct heat or electricity?
I'm contrast to Venus the coldest temperature yet measured on the surface of any body in the solar system is -235C
Answer:
Explanation:
I don't get what the relation here is. Venus is the hottest planet in our solar system. And yes, it's hotter than mercury despite mercury being closer to the sun. And your question talks about the coldest temperature measured which is -235 degrees Celsius. That surely isn't measured on Venus. I'm only wondering what Venus has got to go with cold and what exactly your question is
What is the length of a string with a mass of 2.5 kg, with a
tension of 20 N, if the speed of wave on the string is 2 m/s?
Answer:
.5 m
Explanation:
It is correct lol.
WHAT IS THE ANSWER TO DURING THE MOTION OF A WHEEL ALONG THE ROAD , VELOCTY HAS HOW MANY COMPONENTS CHOOSE ( 1,2,3) OR (ANY NUMBER)
Explanation:
The car's rate of change of position is decreasing. The car is moving but its rate of position increase is coming down. The car will eventually come to a brief stop and begin traveling backward.
the potential difference across two plates is 1.50 V. if the plates are 8.22*10^-4 m apart, what is the electric field between them?
Answer: 1820
Explanation:
acellus
Two point charges are separated by a distance of 1 meter. How much would the force change if one charge was 4x larger?
Answer:
the force would increase 4 times more
Explanation
more force results more mass or acceleration
Answer:
it would grow by 4x
Explanation: